Door closer and check.



S. ALSOP.

noon CLOSER AND CHECK.

APPLIOATION FILED JAN/129, 1908.

900,973, Patented Oct. 13,1908.

WITNE SES- I BY $53M (5. 06M

ATTORNEY 7HE NORRIS PETERS ca. wAsHlNorau. n. c.

UNITED STATES PATENT OFFICE SAMUEL ALSOP, OF BELLINGHAM, WASHINGTON. noon CLOSER AND CHECK.

No. 900,973. Specification of Letters Patent. Patented Oct. 13, 1908. Application filed January 29, 1908. Serial No. 413,202. To all whom it may concern: I the upper end of the weight. The coupling Be it known that I, SAMUEL ALsoP, a citil 11 on the upper end of pipe 12 provides an zen of the United States, and a resident of expanded end for the pipe so that the weight Bellingham, in the county of Whatcom and when moving in this end of the pipe may State of Washington, have invented certain not come in contact with the extreme end of new and useful Improvements in a Door the same, and thus none of the liquid clingspecification. end of the pipe and creep over the same.

y invention relates to an improvement In using my invention, the operator holds in devices for automatically closing 'doors the door open until he desires to have it close and is especially applicable for closing elewhen he simply releases the door. Assume vator-well-inclosure doors. that at such a time the door 2 occupies a po- The object of my invention is to close the sition as illustrated in full lines in Figs. 1 and door entirely by mechanical means and by 2. Upon it being free to move, the weight the use of simple and durable apparatus. 10 moves downward carrying the door to- The application of my invention to eleward the left. Before the door is entirely vator-well-inclosure doors is illustrated in closed, however, the weight 10 dashes into the accompanying sheet of drawings in which theliquid 14 which greatly reduces its velocsimilar numerals refer to similar parts in the ity and thus the door 2 is slowly but positwo views. tively closed without slamming, when it Figure 1 is a plan view of the side of the inreaches the position shown in dotted outline closure in which is located the door opening, at 2 Fig. 2 with the latch 3 engaged with the door, and the device referred to. Fig. 2 catch 30. The lower limit of the weight 10 is an elevation of the same, partly sectionalis shown in dotted outline at 10 Fig. 2. ized, and Viewed from the elevator well. Any liquid serves very well for use in the ore specifically, 1 is the elevator-Well-inpipe 12 provided that it does not congeal at a closure, 2 is the door, 3 is the door latch, 30 is ow temperature. In practice I prefer to use the door catch, 4 and 5 are door hangers, 6 is a moderately viscous oil that does not harden a screw eye attached to door hanger 5, 7 is when exposed to the lowest temperature a cord, one end of which is attached to screw likely to pertain where the elevator is located. eye 7 and passes over pulley sheave 8 and the Although especially designed for closing other end of which is attached to weight 10. elevator doors, my device is also applicable heave 8 finds bearings in a housing 9 sefor use in closing other doors similarly hung. curely fastened to the frame of the inclosure. Therefore, I claim. r

12 is a pipe secured in one corner of the in- 1. In a door closer and check, the combiclosure by the clamps 13, 13. The lower end nation of a door; a weight; means for attachof the pipe is closed by the cap 15 and the ing said weight to said door areceptacle conupper end is finished with the coupling 11. taining liquid, said weight and said receptahis pipe is partly filled with some liquid 14. ole being of such relative diameters as to per- The weight 10 is of such diameter that it mit the free movement of said liquid by and may easily move within the pipe 12. The alongside of sai weight when said weight is location of the pipe 12 is such beneath the I entering, moving in or leaving said liquid; sheave 8 that the weight hangs within the I means whereby said weight enters said liquid pipe without necessarily touching the sides only when said door is nearly closed" and of the same. The length of the cord 7 is such means whereby said liquid rises around said that the weight never can touch the cap 15. weight nearly as rapidly, above its level be- The height of the liquid in the pipe 12 is such I fore said, weight entered the same, as said that, when the weight is not in the liquid, the weight descends below said level. upper surface of the liquid stands at about 2. In a door closer and check, the combithe point reached by the middle of the nation of a orizontally movable door, a weight when at its lower limit. The diamweight having relatively a much greater eter of the stand pipe is such as compared to length than diameter, a flexible connection, the diameter and length of the weight that between said door and said weight, a sheave when the weight has reached its lower limit, over which said flexible connection is passed 55 the liquid has risen to a point a little below a liquid containing stand pipe beneath said sheave of such height that said weight does Signed at Behinghain in the county of not leave the same when said door is fully i \Vhatooin and State of ashington this open and of such depth that said Weight does twenty-second day of January A. D. 1908. '1 0 not reach its bottom When said door is fully SAMUEL ALSOP. closed, of such internal diameter that said Witnesses:

Weight hangs loosely in the same, and having R. S. SIMPsoN, an enlarged upper end. CLARA ATKINSON. 

